The film, which also stars Minnie Driver and Dustin Hoffman, centers on Barney, who as Giamatti described, is "a drunk, cigar-smoking loon," behavior Giamatti tends to avoid in real life.

Driver, on the other hand, said her character of Barney's second wife was a "sort of princess" who was "tragically funny." And she loved shooting some of the film in Italy. "Something about walking the streets of Rome, made me feel like a movie star." Audrey Hepburn? "More like Sophia Loren."

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And director Richard J. Lewis shed some light on translating the an epic novel to the big screen.